Juseop Lee - Publications

Journal Papers

1. Juseop Lee and Y.-S. Kim, "A new method of accurately determining resonant frequencies of cylindrical and ring dielectric resonators," IEEE Trans. on Microwave Theory and Tech., vol. 47, no. 6, pp. 706- 708, Jun. 1999.

2. Juseop Lee, M. S. Uhm, I.-B. Yom, and S.-P. Lee, "Coupling matrix of a 10th order dual-mode asymmetric canonical filter," Microwave and Optical Technology Letters, vol. 38, no. 1, pp. 64-68, Jul. 5, 2003.

3. Juseop Lee, M. S. Uhm, I.-B. Yom, and S.-P. Lee, "An accurate tuning method for dual-mode cavity filters," Microwave and Optical Technology Letters, vol. 38, no. 2, pp. 123-125, Jul. 25, 2003.

4. Juseop Lee, M. S. Uhm, and I.-B. Yom, "A dual-passband filter of canonical structure for satellite applications," IEEE Microwave and Wireless Component Letters, vol. 14, no. 6, pp. 271-273, Jun. 2004.

5. Juseop Lee, M. S. Uhm, J. H. Park, ""Synthesis of a self-equalized dual-passband filter" IEEE Microwave and Wireless Components Letters, vol. 15, no. 4, pp. 256-258, Apr. 2005.

6. C.-S. Ahn, Juseop Lee, and Y.-S. Kim, "Design flexibility of an open-loop resonator filter using similarity transformation of coupling matrix," IEEE Microwave and Wireless Components Letters, vol. 15, no. 4, pp. 262-264, Apr. 2005.

7. C.-S. Ahn, Juseop Lee, and Y.-S. Kim, "A dual-passband microstrip open-loop resonator filter" Microwave and Optical Technology Letters, vol. 46, no. 3, pp. 241-243, Aug. 5, 2005.

8. Juseop Lee, M. S. Uhm, I.-B. Yom, and J. P. Kim, "A dual-mode waveguide pseudo-elliptic filter with zero-shifting properties" Microwave and Optical Technology Letters, vol. 47, no. 4, pp. 357-359, Nov. 20, 2005.

9. M. S. Uhm, Juseop Lee, I.-B. Yom, and J. P. Kim, "An efficient multipaction analysis of an output multiplexer for satellite applications" Journal of the Korea Electromagnetic Engineering Society, vol. 5, no. 4, pp. 176-182, Dec. 2005.

10. M. S. Uhm, Juseop Lee, I.-B. Yom, and J. P. Kim, “General coupling matrix synthesis method for microwave resonator filters with arbitrary topology” ETRI Journal, vol. 28, no. 2, pp. 223-226, Apr. 2006.

11. M. S. Uhm, I.-B. Yom, Juseop Lee, and J. P. Kim, "A dual-passband waveguide filter with canonical structure for Ka band satellite applications" Microwave Journal, vol. 49, no. 7, pp. 90-97, Jul. 2006.

12. Juseop Lee and K. Sarabandi, "A miniaturized conductor-backed slot-line resonator filter with two transmission zeros" IEEE Microwave and Wireless Components Letters, vol. 16, no. 12, pp. 660-662, Dec. 2006.

13. Juseop Lee and K. Sarabandi "A synthesis method for dual-passband microwave filters" IEEE Trans. on Microwave Theory and Tech., vol. 55, no. 6, pp. 1163-1170, Jun. 2007.

14. Juseop Lee and K. Sarabandi "Design of triple-passband microwave filters using frequency transformations" IEEE Trans. on Microwave Theory and Tech., vol. 56, no. 1, pp. 187-193, Jan. 2008.

15. Juseop Lee and K. Sarabandi "An analytic design method for microstrip tunable filters" IEEE Trans. on Microwave Theory and Tech., vol. 56, no. 7, pp.1699-1706, Jul. 2008.

16. Juseop Lee and K. Sarabandi "Synthesizing microwave resonator filters” IEEE Microwave Magazine, vol. 10, no. 1, pp. 57-65, Feb. 2009.

17. E. J. Naglich, Juseop Lee, D. Peroulis, and W. J. Chappell, "A tunable bandpass-to-bandstop reconfigurable filter with independent bandwidths and tunable response shape” IEEE Trans. on Microwave Theory and Tech., vol. 58, no. 12, pp.3770-3779, Dec. 2010.

18. Juseop Lee, E. J. Naglich, and W. J. Chappell "Frequency response control in frequency-tunable bandstop filters” IEEE Microwave and Wireless Components Letters, vol. 20, no. 12, pp. 669-671, Dec. 2010.

19. E. J. Naglich, Juseop Lee, D. Peroulis, and W. J. Chappell, "Bandpass-bandstop filter cascade performance over wide frequency tuning ranges” IEEE Trans. on Microwave Theory and Tech., vol. 58, no. 12, pp. 3945 - 3953, Dec. 2010.

20. Juseop Lee, E. J. Naglich, H. H. Sigmarsson, D. Peroulis, and W. J. Chappell, "Tunable inter-resonator coupling structure with positive and negative values and its application to the field-programmable filter array (FPFA)” IEEE Trans. on Microwave Theory and Tech., vol. 59, no. 12, pp. 3389 - 3400, Dec. 2011

21. E. J. Naglich, Juseop Lee, D. Peroulis, and W. J. Chappell, "Extended tunable bandstop filter cascade with continuous 0.85 to 6.6 GHz coverage” IEEE Trans. on Microwave Theory and Tech., vol.60, no. 1, pp. 21-30, Jan. 2012.

22. E. J. Naglich, Juseop Lee, D. Peroulis, and W. J. Chappell, "Switchless tunable bandstop-to-all-pass reconfigurable filter” IEEE Trans. on Microwave Theory and Tech., vol. 60, no. 5, pp. 1258 - 1265, May 2012.

23. Juseop Lee, T.-C. Lee, and W. J. Chappell, "Lumped element realization of absorptive bandstop filter with anomalously high spectral isolation” IEEE Trans. on Microwave Theory and Tech.,vol. 60, no. 8, pp. 2424 - 2430, Aug. 2012.

24. K. Lee, T.-H. Lee, Y.-S. Kim, and Juseop Lee, "New negative coupling structure for substrate-integrated cavity resonators and its application to design of an elliptic response filter” Progress in Electromagnetic Research, vol. 137, pp. 117-127, 2013.

25. Juseop Lee, E. J. Naglich, H. H. Sigmarsson, D. Peroulis, and W. J. Chappell, "New bandstop filter circuit topology and its application to design of a bandstop-to-bandpass switchable filter" IEEE Trans. on Microwave Theory and Tech., vol. 61, no. 3, pp. 1114 - 1123, Mar. 2013.

26. E. J. Naglich, Juseop Lee, H. H. Sigmarsson, D. Peroulis, and W. J. Chappell, "Intersecting parallel plate waveguide loaded cavities for dual-mode and dual-band filters" IEEE Trans. on Microwave Theory and Tech., vol. 61. no. 5, pp. 1829 -1838, May 2013.

27. B. Kim, J. Lee, Juseop Lee, B. Jung, and W. J. Chappell, "RF CMOS integrated on-chip tunable absorptive bandstop filter using Q-tunable resonators" IEEE Trans. on Electron Devices, vol. 60, no. 5, pp. 1730 - 1737, May 2013.

28. T.-H. Lee, C.-S. Ahn, Y.-S. Kim, and Juseop Lee, "Extension of bandstop filter topology with inter-resonator coupling structures to higher-order filters" IEEE Microwave and Wireless Components Letters, vol. 23, no. 8, pp. 403-405, Aug. 2013.

29. K. Chen, Juseop Lee, W. J. Chappell, and D. Peroulis, "Co-design of highly efficient power amplifier and high-Q output bandpass filter" IEEE Trans. on Microwave Theory and Tech., vol. 61, no. 11, pp. 3940 - 3950, Nov. 2013.

30. Juseop Lee, Y.-S. Lim, W.-J. Yang, and S.-O. Lim, "Wireless power transfer system adaptive to change in coil separation," IEEE Trans. on Antennas and Propagation, vol. 62, no. 2, pp. 889-898, Feb. 2014.

31. I. Shim, T.-H. Lee, Juseop Lee, and Y.-S. Kim, "A novel resonant ground structure based on a cavity-backed DGS" IEEE Microwave and Wireless Components Letters, vol. 24, no. 5, pp. 321-323, May 2014.

32. Juseop Lee, Y.-S. Lim, H. Ahn, J.-D. Yu, and S.-O. Lim, "Impedance-matched wireless power transfer systems using an arbitrary number of coils flexible coil positioning" IEEE Antennas and Wireless Propagation Letters, vol. 13, pp. 1207 - 1210, 2014.

33. K. Lee, T.-H. Lee, C.-S. Ahn, Y.-S. Kim, and Juseop Lee, "Reconfigurable dual-stopband filters with reduced number of couplings between a transmission line and resonators," IEEE Microwave and Wireless Components Letters, vol. 25, no. 2, pp. 106-108, Feb. 2015.

34. C.-S. Ahn, S.-J. Kim, Y.-S. Kim, and Juseop Lee, "Markov chain of active tracking in a radar system and its application to quantitative analysis on track formation range" Journal of Electrical Engineering and Technology, vol. 10, no. 3, pp. 1275 - 1283, May 2015.

35. B. Lee, T.-H. Lee, K. Lee, M. S. Uhm, and Juseop Lee, "K-band substrate-integrated waveguide resonator filter with suppressed higher-order mode," IEEE Microwave and Wireless Components Letters, vol. 26, no. 6, pp. 367-369, June 2015.

36. K. Lee, T.-H. Lee, G. C. Park, H. H. Sigmarsson, and Juseop Lee, "Frequency-tunable bandstop-bandpass dual-function microwave filter" IEICE Electronics Express, vol. 12, no. 11, pp. 20150313, June 2015.

37. T.-C. Lee, Juseop Lee, and D. Peroulis, "Dynamic bandpass filter shape and interference cancellation control utilizing bandpass-bandstop filter cascade" IEEE Trans. on Microwave Theory and Tech., vol. 63, no. 8. pp. 2526 - 2539, Aug. 2015.

38. B. Lee, S. Nam, B. Koh, C. Kwak, and Juseop Lee, "K-band frequency tunable substrate-integrated waveguide resonator filter with enhanced stopband attenuation" IEEE Trans. on Microwave Theory and Tech., vol. 63, no. 11, pp. 3632 - 3640, Nov. 2015.

39. Juseop Lee, B. Kim, K. Lee, W. J. Chappell, "Bandwidth-enhanced lumped-element absorptive bandstop filter topology and its application to LTCC bandstop filter design" International Journal of Microwave and Wireless Technologies, vol. 7, issue 6, pp. 691-698, Dec. 2015.

40. S. Saeedi, Juseop Lee, and H. H. Sigmarsson, "Novel coupling matrix synthesis for single layer substrate-integrated evanescent-mode cavity tunable bandstop filter design" IEEE Trans. on Microwave Theory and Tech., vol. 63, no. 12, pp. 3929 - 3937, Dec. 2015.

41. T.-H. Lee, K. Lee, G. C. Park, Y-S. Kim and Juseop Lee, "Bandstop Filter (BSF) topology with variable attenuation" IEEE Trans. on Microwave Theory and Tech., vol. 64, no. 2, pp. 467- 474, Feb. 2016.

42. S. Saeedi, Juseop Lee, and H. H. Sigmarsson, "Tunable, high-Q, substrate-integrated, evanescent-mode cavity bandpass-bandstop filter cascade" IEEE Microwave and Wireless Components Letters, vol. 26, no. 4, pp. 240-242, April 2016.

43. C.-S. Ahn, S.-J. Kim, Y.-S. Kim, and Juseop Lee, "Accurate characterization of T/R modules with consideration of amplitude/phase cross effect in AESA antenna unit" ETRI Journal, vol. 38, no. 3, pp. 417-424, June 2016.

44. S. Saeedi, Juseop Lee, and H. H. Sigmarsson, "Prediction of power handling in tunable, high-Q, substrate-integrated, evanescent-mode cavity bandpass filters" IET Electronics Letters, vol. 52, no. 10, pp. 846-848, May 2016.

45. S. Saeedi, Juseop Lee, and H. H. Sigmarsson "A new property of maximally-flat lowpass filter prototype coefficients with application in dissipative loss calculation" Progress in Electromagnetics Research C, vol. 63, pp. 1-11, Mar. 2016.

46. S. Nam, B. Koh, B. Lee, and Juseop Lee, "Low-cost high-performance frequency-tunable substrate-integrated waveguide filter structure and fabrication method" IEICE Electronics Express, vol. 13, No. 9, pp. 20160211, May 2016.

47. B. Koh, B. Lee, S. Nam, T.-H. Lee, and Juseop Lee, "Integration of inter-resonator coupling structures with applications to filter systems with signal route selectivity" IEEE Trans. on Microwave Theory and Tech., vol. 64, no. 9, pp.2790-2803, Sept. 2016.

48. S. Nam, B. Lee, B. Koh, C. Kwak, and Juseop Lee, "K-band fully reconfigurable pseudo-elliptic waveguide resonator filter with tunable positive and negative couplings" IEICE Trans. on Communications, vol. E99-B, no. 10, pp. 2136 - 2145, Oct. 2016.

49. T.-H. Lee, B. Kim, K. Lee, W. J. Chappell, and Juseop Lee, "Frequency-tunable low-Q lumped-element resonator bandstop filter with high attenuation" IEEE Trans. on Microwave Theory and Tech., vol. 64, no. 11, pp. 3549 - 3556, Nov. 2016.

50. B. Lee, S. Nam, T.-H. Lee, C.-S. Ahn, and Juseop Lee, "Single filter structure with tunable operating frequency in non-contiguous bands" IEEE Trans. on Components, Packaging and Manufacturing Technology, vol. 7, no. 1, pp. 98-105, Jan. 2017.

51. B. Lee, S. Nam, T.-H. Lee, and Juseop Lee , "Third-order frequency-agile substrate-integrated waveguide filter with a pair of transmission zeros" IEEE Microwave and Wireless Components Letters, vol. 27, no. 6, pp. 566-568, June 2017.

52. B. Lee, B. Koh, S. Nam, T.-H. Lee, and Juseop Lee, "Frequency-tunable filtering power divider with new topology" IEEE Trans. on Components, Packaging and Manufacturing Technology, vol. 7, no. 7, pp. 1151 - 1162, July 2017.

53. S. Nam, B. Lee, and Juseop Lee, "Theory for pseudo-Butterworth filter response and its application to bandwidth tuning" IEEE Trans. on Microwave Theory and Tech., vol. 65, no. 8, pp. 2847 - 2856, Aug. 2017.

54. B. Lee, S. Nam, B. Koh, and Juseop Lee, "K-band substrate-integrated waveguide filter using TM21 mode with enhanced stopband attenuation" IEEE Microwave and Wireless Components Letters, vol. 27, no. 8, pp. 700-702, Aug. 2017.

55. S. Nam, B. Lee, B. Koh, and Juseop Lee, "Reconfigurable bandpass filter with resonators in cul-de-sacs for producing notches" IEEE Trans. on Components, Packaging and Manufacturing Technology, vol. 7, no. 9, pp. 1531 - 1542, Sept. 2017.

56. T.-H. Lee, B. Lee, S. Nam, Y.-S. Kim, and Juseop Lee,"Frequency-tunable tri-function filter" IEEE Trans. on Microwave Theory and Tech., vol. 65, no. 11, pp. 4584 - 4592, Nov. 2017.

57. B. Lee, B. Koh, S. Nam, T.-H. Lee, and Juseop Lee, "Band-switchable substrate-integrated waveguide resonator and filter" IEEE Trans. on Microwave Theory and Tech., vol. 66, no.1, pp. 147-156, Jan. 2018.

58. S.-W. Jeong and Juseop Lee, "Frequency- and bandwidth-tunable bandstop filter containing variable coupling between transmission line and resonator" IEEE Trans. on Microwave Theory and Tech., vol. 66, no. 2, pp. 943-953, Feb. 2018.

59. B. Lee, S. Nam, C. Kwak, and Juseop Lee, "New negative coupling structure for K-band substrate-integrated waveguide resonator filter with a pair of transmission zeros" IEEE Microwave and Wireless Components Letters, vol. 28. no. 2, pp. 135-137, Feb. 2018.

60. S. Nam, B. Lee, C. Kwak, and Juseop Lee, "A new class of K-band high-Q frequency-tunable circular cavity filter" IEEE Trans. on Microwave Theory and Tech., vol. 66, no. 3, pp. 1228-1237, Mar. 2018.

61. S. Saeedi, S. Atash Bahar, Juseop Lee, and H. Sigmarsson, "Control system for piezoelectric-actuator-based tunable evanescent-mode cavity microwave filters" IEEE Trans. on Components, Packaging and Manufacturing Technology, vol. 8. no. 11, pp. 1979-1989, Nov. 2018.

62. B. Lee, S. Nam, C. Kwak, and Juseop Lee, "Bandwidth tuning of resonator filter using reduced number of tunable coupling structures" IEEE Trans. on Microwave Theory and Tech., vol. 67, no. 4, pp. 1496-1503, Apr. 2019.

63. G. Lee, B. Lee, J.-Y. Jeong, and Juseop Lee, "Ka-band surface-mount cross-coupled SIW filter with multi-layered microstrip-to-GCPW transition" IEEE Access, vol. 7, pp. 66453 - 66462, May 2019.

64. S.-W. Jeong, T.-H. Lee, and Juseop Lee, "Frequency- and bandwidth-tunable absorptive bandpass filter" IEEE Trans. on Microwave Theory and Tech., vol. 67, no. 6, pp. 2172 - 2180, June 2019.

65. B. Lee, S. Nam, and Juseop Lee, "Filtering power divider with reflectionless response and wide isolation at output ports" IEEE Trans. on Microwave Theory and Tech., vol. 67, no. 7, pp. 2684 - 2692, July 2019.

66. S. Nam, B. Lee, C. Kwak, and Juseop Lee, "Contactless tuning plunger and its application to K-band frequency-tunable cavity filter with a constant absolute bandwidth" IEEE Trans. on Microwave Theory and Tech., vol. 67, no. 7, pp. 2713 - 2719, July 2019.

67. B. Lee, S. Nam, and Juseop Lee, "Optimization-free design equations for narrow-band equal-division filtering power divider with pre-specified filtering response and wideband isolation" IEEE Trans. on Circuits and Systems I: Regular Papers, vol. 66, no. 7, pp. 2496 - 2507, July 2019.

68. T.-H. Lee, B. Lee, Y.-S. Kim, K. Wu, and Juseop Lee, "Higher order lumped element lowpass and bandpass filters structures" IET Microwaves, Antennas & Propagation, vol. 13, issue 8, pp. 1166 - 1173, July 2019.

69. B. Lee, S. Nam, S.-W. Jeong, and Juseop Lee, "Post-loaded Substrate-Integrated Waveguide Bandpass Filter with Wide Upper Stopband and Reduced Electric Field Intensity" IEEE Microwave and Wireless Components Letters, vol. 30, no. 4, pp. 371-374, Apr. 2020.

70. J. Lee, B. Lee, S. Nam, and Juseop Lee, "Rigorous design method for symmetric reflectionless filters with arbitrary prescribed transmission response" IEEE Trans. on Microwave Theory and Tech., vol. 68, no. 6, pp. 2300 - 2307, June 2020.

71. J. Lee and Juseop Lee, "Distributed-element reflectionless bandstop filter with a broadband impedance matching" IEEE Microwave and Wireless Components Letters, vol. 30, no. 6, pp. 561-564, June 2020.

72. S. Lee, S. Nam, and Juseop Lee, "Practical design and implementation method for asymmetric-response post-loaded substrate-integrated waveguide filters" IEEE Access, vol. 8, pp. 101528--101538, 2020.

73. J. Lee and Juseop Lee, "Arbitrary-order distributed-element narrowband reflectionless bandstop filter with canonical transmission response and broadband matching" IEEE Trans. on Microwave Theory and Tech., vol. 68, no. 10, pp. 4381 - 4389, Oct. 2020.

74. B. Lee, G. Lee, and Juseop Lee, "Topology and design formulas for four-way filtering power divider with wide isolation range" IEEE Access, vol. 9, pp. 18298 - 18306, Jan. 2021.

75. J. Lee and Juseop Lee, "Generic and versatile reflectionless filter topology and its applications to distributed-element reflectionless bandpass filters" IEEE Trans. on Microwave Theory and Tech., vol. 69, no. 6, pp. 3058 - 3069, June 2021.

76. G. Lee, J. Lee, B. Lee, and Juseop Lee, "Rigorous design method for distributed-element bandpass filter with reflectionless response at two ports" Electronics Letters, vol. 53, no. 13, pp. 514-516, June 2021.

77. Juseop Lee, J. Lee, and N. S. Barker, "Rigorous design of input-reflectionless filter with Chebyshev response and exact approach to increase reflectionless range" IEEE Trans. on Microwave Theory and Tech., vol. 69, no. 10. pp. 4460 - 4475, Oct. 2021.

78. B. Lee, G. Lee, S. Nam, and Juseop Lee, "Negative interresonator coupling structure enclosed in waveguide resonator filter" IEEE Trans. on Microwave Theory and Tech., vol. 69, no. 11, pp. 4658 - 4666, Nov. 2021.

79. S.-W. Jeong, G. Lee, J. Lee, and Juseop Lee, "Frequency-tunable absorptive bandpass filter using substrate-integrated waveguide structure" IEEE Trans. on Microwave Theory and Tech., vol. 69, no. 12, pp. 5351 - 5359, Dec. 2021.

80. J. Lee, and Juseop Lee, "Transmission-line absorptive bandstop filters with wide passband: synthesis and design" IEEE Trans. on Microwave Theory and Tech.,vol. 69, no. 12, pp. 5371 - 5380, Dec. 2021.

81. B. Lee, G. Lee, J. Lee, and Juseop Lee, "All-port-reflectionless narrowband filtering power divider topology with generic equations" IEEE Trans. on Circuits and Systems I: Regular Papers, vol. 69. no. 4, pp. 1417 - 1426, Apr. 2022.

82. J. Lee and Juseop Lee, "Implementation of distributed-element Foster section and its applications to bandpass filters" IEEE Microwave and Wireless Components Letters, vol. 32, no. 5, pp. 391-394, May 2022.

83. J. Lee and Juseop Lee, "Transmission-line bandpass filter structures with infinite reflectionless range" IEEE Trans. on Circuits and Systems I:Regular Papers, vol. 69, no. 6, pp. 2387 - 2398, June 2022.

84. B. Lee, G. Lee, J. Lee, Juseop Lee, "Resonator reuse approach for implementing narrowband bandpass-bandstop cascade based on mode orthogonality" IEEE Trans. on Circuits and Systems II: Express Briefs, vol. 70. no. 1, pp. 41-45, Jan. 2023.

85. S. Lee, S. Yoon, and Juseop Lee, "Electroformed dual-mode waveguide filter with no tuning screws" IEEE Trans. on Components, Packaging, and Manufacturing Technology, vol. 13, no. 1, pp. 138-141, Jan. 2023.

86. S. Lee and Juseop Lee, "Accurate synthesis of input-reflectionless dual-passband filter" IEEE Trans. on Microwave Theory and Tech., vol. 71, no. 3, pp. 1148 - 1158, Mar. 2023.

87. B. Lee, G. Lee, and Juseop Lee, "Two-layered cross-coupled post-loaded SIW filter with microstrip ports" IEEE Trans. on Circuits and Systems II: Express Briefs, vol. 70, no. 4, pp. 1346 - 1350, Apr. 2023.

88. J. Lee, M. Song, and Juseop Lee, "Transmission-line schematic for harmonic-controlled bandpass filter" IEEE Access, vol. 11, pp. 53275 - 53289, May 2023 .

89. J. Lee, and Juseop Lee, "Design methodology of transmission-line quadruplet filters supported by rigorous circuit transformation" IEEE Trans. on Microwave Theory and Tech., vol. 71, no. 6, pp. 2639 - 2651, June 2023.

90. S. Lee, J. Lee, and Juseop Lee, "Synthesis of N-Foster-section filter with maximum 2N prescribed transmission zeros by heuristic-aided graph search," IEEE Trans. on Microwave Theory and Tech., vol. 71, no. 9, pp. 3979 - 3990, Sept. 2023.

91. M. Song, H. Choi, Y. Jung, T. Lee, G. Choi, Juseop Lee, and M. Song, "Multiband microwave photonic filters with tunability and programmability via optical frequency comb shaping," Journal of Lightwave Technology, vol. 41, no. 23, pp. 7215 - 7222, Dec. 2023.

92. J. Lee and Juseop Lee, "Formulation of transmission-line canonical cross-coupled filters based on two standard building blocks" IEEE Trans. on Microwave Theory and Tech., vol. 72, no. 2, pp. 1234 - 1253, Feb. 2024.

93. S. Lee, J. Lee, D. Baek, P. Lee, and Juseop Lee, "Practical circuit-based design approach for waveguide lowpass filter with extremely steep skirt response" IEEE Access, vol. 12, pp. 35512 - 35520, Mar. 2024.

94. J. Lee, O. Ceylan, and Juseop Lee, "Reflectionless highpass filters for load-pull setups" IEEE Microwave Magazine, vol. 25, no. 6, pp. 72-79, June 2024.

95. H. Choi, M. Song, and Juseop Lee, "Novel Transmission-line circuit configuration of cross-coupled filter with negative coupling" IEEE Trans. on Microwave Theory and Tech., vol. 72, no. 8, pp. 4842 - 4853, Aug. 2024.

96. Juseop Lee, H. Choi, J. Lee, and M. Song, "Direct design method for wideband quadruplet and higher-order bandpass filters with a pair of transmission zeros based on explicit design formulas" IET Microwaves, Antennas, and Propagation, vol .18, no. 12, pp. 1084 - 1093, Dec. 2024.

97. S. Lee, J. Lee, and Juseop Lee, "Rigorous approach to coupling matrix synthesis problem with arbitrary topology" IEEE Trans. on Microwave Theory and Tech., vol. 73, no. 1, pp. 335-351, Jan. 2025.

98. S. Lee, J. Lee, B. Lee, J. Lim, J. Han, and Juseop Lee, "K-band waveguide resonator bandpass filter structure with adjustable transmission zeros for producing various symmetric and asymmetric responses" IEEE Access, vol. 13, pp. 8664 - 8675, Jan. 2025.

99. B. Lee, J. Lee, and Juseop Lee, "Reflectionless substrate loaded waveguide bandstop filter" IEEE Microwave and Wireless Technology Letters, vol. 35, no. 3, pp. 278-281, Mar. 2025.

100. J. Lee, S. Jeong, and Juseop Lee, "Wideband bias tee without lumped elements" IEEE Microwave Magazine, vol. 26, no. 6, pp. 104-112, June 2025.

101. J. Lee, K. Lee, and Juseop Lee, "Reflectionless high-pass filter design for load-pull measurement setups" IEEE Microwave Magazine, vol. 26, no. 6, pp. 146-152, June 2025.

102. B. Lee, G. Lee, S. Nam, and Juseop Lee, "Extremely low-complexity negative coupling structure for SIW filters and approach to adjust rejection next to transmission zeros" IEEE Trans. on Microwave Theory and Tech., vol. 73, no. 8, pp. 5238 - 5247, Aug. 2025.

103. H. Choi and Juseop Lee, "Novel transmission-line identity for Pi-type stub circuit" IEEE Microwave and Wireless Technology Letters, vol. 36, no. 2, pp. 237-240, Feb. 2026. .

104. K. Lee, J. Lee and Juseop Lee, "Wide passband bandstop filter " IEEE Microwave Magazine, accepted for publication.

105. Juseop Lee and K. Lee, "Accurate lowpass-to-bandpass frequency transformation for distributed-element resonator filter design," IEEE Microwave and Wireless Technology Letters, accepted for publication.

106. H. Choi and Juseop Lee, "Fully formula-based accurate design approach for negative-coupling bandpass filters with a wide spurious-free range," IEEE Microwave and Wireless Technology Letters, accepted for publication.

Conference Papers

1. Juseop Lee, S.-M. Han, and Y.-S. Kim, "Resonant frequency of dielectric resonator," IEEE Radio and Wireless Conference, pp. 273-276, Colorado Springs, CO, Aug. 1998.

2. Juseop Lee, S.-H. Lim, S.-H. Lee, and Y.-S. Kim, "Q-factors of a ring dielectric resonator in an MIC structure," IEEE Radio and Wireless Conference, pp. 195-198, Denver, CO, Aug. 1999.

3. Juseop Lee, S. Kahng, M. S. Uhm, I.-B. Yom, and S.-P. Lee, "Externally equalized dual-mode narrow-band filters for Ku & Ka band satellite application," Topical Symposium on Millimeter Waves 2002, pp. 99-102, Yokosuka, Japan, Feb. 2002.

4. Juseop Lee, M. S. Uhm, S. Kahng, I.-B. Yom, and S.-P. Lee, "A tuning method using a dummy cavity for dual-mode cavity filters," IEEE Radio and Wireless Conference, pp. 67-70, Boston, MA, Aug. 2002.

5. M. S. Uhm, Juseop Lee, D.-K. Baek, I.-B. Yom, and S.-P. Lee, "Ka band waveguide diplexer using E-plane T-junction with inductive iris," Asia-Pacific Microwave Conference, pp. 508-511, Kyoto, Japan, Nov. 2002.

6. Juseop Lee, M. S. Uhm, I.-B. Yom, and S. P. Lee, "Dielectric waveguide approach for analysis on hybrid mode resonant frequency of a ring DR loaded cavity," IEEE AP-S Int. Symposium on Antennas and Propagation, vol. 2, pp. 1197-1200, Columbus, OH, June 2003.

7. Juseop Lee, M. S. Uhm, I.-B. Yom, S.-P. Lee, and C. K. Choi, "Simultaneous reduction of amplitude and group-delay variation of input demultiplexer for Ku band satellite transponder," IEEE Vehicular Technology Conference (VTC 2003-Fall), pp. 2669-2672, Orlando, FL, Oct. 2003.

8. J. Choi, Juseop Lee, and Y.-S. Kim, "A simple method for computing a coupling coefficient between ring DRs in an MIC structure," Asia-Pacific Microwave Conference (APMC 2003), vol. 3, paper no. WEP-75, Seoul, Korea, Nov. 2003.

9. M. S. Uhm, Juseop Lee, S. H. Yun, Y. S. Noh, J. H. Park, "A study on the engineering verification of RF passive equipment for Communication, Ocean and Meteorological Satellite (COMS)," Joint Conference on Satellite Communications (JC-SAT 2004), pp. 79-86, Seoul, Korea, Oct. 2004.

10. M. S. Uhm, Juseop Lee, J. H. Park, and J. P. Kim, "An efficient optimization design of a manifold multiplexer using an accurate equivalent circuit model of coupling irises of channel filters," IEEE MTT-S Int. Microwave Symposium, pp. 1263-1266, Long Beach, CA, Jun. 2005.

11. C. S. Kwak, Juseop Lee, and I.-B. Yom, "Thermal design and analysis of output multiplexer for Ka-band satellite transponder," European Microwave Conference (EuMC), pp. 1231-1234, Paris, France, Oct. 2005.

12. M. Z. Rangwala, Juseop Lee, and K. Sarabandi, "Design of a FMCW millimeter-wave radar for helicopter landing system," Int. Geoscience and Remote Sensing Symposium, Barcelona, Spain, Jul. 2007.

13. E. Naglich, Juseop Lee, D. Peroulis, and W. J. Chappell, "Tunable, substrate integrated, high Q filter cascade for high isolation," IEEE MTT-S Int. Microwave Symposium Digest, pp. 1468-1471, Anaheim, CA, May 2010. Second place in the student paper competition.

14. H. H. Sigmarsson, Juseop Lee, and W. J. Chappell, "Reconfigurable-order bandpass filter for frequency agile systems," IEEE MTT-S Int. Microwave Symposium Digest, pp. 1756-1759, Anaheim, CA, May 2010.

15. H. H. Sigmarsson, E. Binkerd, J. Mass, Juseop Lee, D. Peroulis, and W. J. Chappell, "Practical implementation of frequency monitoring for widely tunable bandpass filters," Proc. of Int. Symposium on Microelectronics, Int. Microelectronics and Packaging Society (IMAPS), pp. 874-880, Raleigh, NC, Nov. 2010.

16. A. Y. Nashashibi, Juseop Lee, and K. Sarabandi, "Compact FMCW design for short range millimeter-wave radar imaging applications," IEEE Radar Conference, pp. 885-888, Kansas City, MO, May 2010.

17. E. Naglich, Juseop Lee, D. Peroulis, and W. J. Chappell, "High-Q tunable bandstop filters with adaptable bandwidth and pole allocation," IEEE MTT-S Int. Microwave Symposium Digest, Baltimore, MD, June 2011.

18. Juseop Lee, E. Naglich, H. H. Sigmarsson, D. Peroulis, and W. J. Chappell, "Frequency-agile field-programmable filter array (FPFA) with multiple functionalities," IEEE MTT-S Int. Microwave Symposium Digest, Baltimore, MD, June 2011.

19. E. J. Naglich, Juseop Lee, D. Peroulis, and W. J. Chappell, "Tunable bandstop filter with a 17-to-1 upper passband," IEEE MTT-S Int. Microwave Symp., Montreal, Quebec, Canada, June 2012.

20. T. Snow, Juseop Lee, and W. J. Chappell, "Tunable high quality-factor absorptive bandstop filter design," IEEE MTT-S Int. Microwave Symp., Montreal, Quebec, Canada, June 2012.

21. H. H. Sigmarsson, E. J. Naglich, Juseop Lee, D. Peroulis, and W. J. Chappell, "Tunable bandpass and bandstop filter cascade for dynamic pole allocation," IEEE Int. Symp. on Antennas and Propagation, Chicago, IL, July 8-13, 2012.

22. T.-H. Lee, K. Lee, C.-S. Ahn, Y.-S. Kim, and Juseop Lee, "Odd-order bandstop filter (BSF) with inter-resonator coupling structures," Progress in Electromagnetics Research Symposium, Stockholm, Sweden, Aug. 12-15, 2013.

23. K. Lee, T.-H. Lee, Y.-S. Kim, and Juseop Lee, "A lumped-element absorptive bandstop filter topology with perfect impedance matching," Progress in Electromagnetics Research Symposium, Stockholm, Sweden, Aug. 12-15, 2013.

24. T.-C. Lee, Juseop Lee, E. J. Naglich, and D. Peroulis, "Octave tunable lumped-element notch filter with resonator-Q-independent zero reflection coefficient," 2014 IEEE MTT-S Int. Microwave Symp., Tampa, FL, June 1-6, 2014.

25. S. Saeedi, Juseop Lee, and H. H. Sigmarsson, "Broadband implementation of tunable, substrate-integrated, evanescent-mode, cavity bandpass filter," 2014 European Microwave Week (EuMW), pp. 849-852, Rome, Italy, Oct. 6-9, 2014.

26. S. Saeedi, W. S. Wilson, T. R. Ashley, H. H Sigmarsson, and Juseop Lee, "Capacitive-based, closed-loop frequency control of substrate-integrated cavity tunable filters," Int. Symposium on Microelectronics, pp. 826-831, San Diego, CA., Oct. 13-16, 2014.

27. B. Koh, B. Lee, S. Nam, and Juseop Lee, "Positive-to-zero continuously tunable inter-resonator coupling structure for applications in filter array systems," 2015 IEEE MTT-S Int. Microwave Symp., Phoenix, AZ, May 17-22, 2015.

28. S. Saeedi, Juseop Lee, and H. H. Sigmarsson, "Double conversion method for synthesis of inverse filters," 2015 IEEE MTT-S Int. Microwave Symp., Phoenix, AZ, May 17-22, 2015.

29. S.Nam, B. Lee, B. Koh, C. Kwak, and Juseop Lee, "K-band fully reconfigurable pseudo-elliptic bandpass filter with a negative coupling structure," 2015 Joint Conference on Satellite Communications (JC-SAT), IEICE Technical Report, pp. 7-12, Osaka, Japan, Oct. 7-8, 2015. (Best Paper Award)

30. S. Nam, B. Lee, and Juseop Lee, "Reconfigurable bandpass filter topology using cul-de-sac resonators with adjustable notches," 2016 IEEE MTT-S Int. Microwave Symp., San Francisco, CA, May 22-27, 2016.

31. T.-H. Lee, B. Lee, and Juseop Lee, "First-order reflectionless lumped-element lowpass filter (LPF) and bandpass filter (BPF) design," 2016 IEEE MTT-S Int. Microwave Symp., San Francisco, CA, May 22-27, 2016.

32. S. Nam, B. Lee, and Juseop Lee, "Constant-absolute-bandwidth frequency-tunable half-mode SIW filter containing no tunable coupling structure," 2017 IEEE MTT-S Int. Microwave Symp., Honolulu, HI, June 4-9, 2017.

33. G. Lee, B. Lee, and Juseop Lee, "Ka-band surface-mount dielectric resonator filter with an enhanced stopband performance," Progress in Electromagnetics Research Symposium, Singapore, Nov. 19-22, 2017.

34. S.-W. Jeong, T.-H. Lee, and Jueop Lee, "Absorptive filter prototype and distributed-element absorptive bandpass filter," IEEE MTT-S Int. Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, Reykjavik, Iceland, Aug. 8-10, 2018.

35. B. Koh and Juseop Lee, "Reflectionless Butterworth and Chebyshev filters," European Microwave Conference in Central Europe, Prague, Czech Republic, May 13-15, 2019.

36. S. Nam, B. Lee, and Juseop Lee, "Gap waveguide structure with three functionalities: all-stop, all-pass, and fully reconfigurable bandpass filtering," European Microwave Conference in Central Europe, Prague, Czech Republic, May 13-15, 2019.

37. S. Nam, B. Lee, and Juseop Lee, "Frequency-tunable substrate-integrated waveguide filter using contactless rotatable flaps," 2019 IEEE MTT-S Int. Microwave Symp., Boston, MA, June 2-7, 2019.

38. S. Lee, S. Nam, B. Lee, and Juseop Lee, "Easy-to-fabricate embedded negative coupling structure for post-loaded dielectric resonator filter," European Microwave Conference, Paris, France, Oct. 1-3, 2019.

39. J. Lee, B. Lee, S. Nam, and Juseop Lee, "Topology and rigorous design method for reflectionless bandstop filter," European Microwave Conference, Paris, France, Oct. 1-3, 2019.

40. S.-W. Jeong and Juseop Lee, "Absorptive bandpass filter with a pair of transmission zeros," IEEE International NEWCAS conference, Montreal, Canada (online), June 16-19, 2020.

41. J. Lee and Juseop Lee, "Distributed-element absorptive bandpass filter with a broadband impedance matching," IEEE MTT-S Int. Microwave Symposium, Los Angeles, CA (online), Aug. 4-6, 2020.

42. B. Lee, S. Nam, and Juseop Lee, "New static external coupling structure for K-band frequency-tunable constant-bandwidth waveguide filter with wide tuning range," Int. Conference on Electronics, Information, and Communication (ICEIC), Jeju Island, South Korea, Jan. 31- Feb. 3, 2021.

43. J. Lee and Juseop Lee, "Practical design method of distributed-element reflectionless bandstop filters," Int. Conference on Electronics, Information, and Communication (ICEIC), Jeju Island, South Korea, Jan. 31- Feb. 3, 2021.

44. J. Lee and Juseop Lee, "A new class of symmetric reflectionless filter topology and its applications to coupled-line bandpass filter design," IEEE MTT-S Int. Wireless Symposium, Nanjing, China, May 23-26, 2021.

45. Juseop Lee, H.-Y. Tsao, S. Lee, and N. S. Barker, "Terahertz input-reflectionless waveguide filter," IEEE MTT-S Int. Microwave Symp., Atlanta, GA, June 20-25, 2021.

46. S. Lee, J. Lee, and Juseop Lee, "Theoretical design of transmission-line reflectionless bandstop filter," IEEE MTT-S Int. Microwave Filter Workshop, Perugia, Italy, Nov. 17-19, 2021.

47. B. Lee, G. Lee, and Jueop Lee, "Post-loaded substrate-integrated waveguide dual-band filter with wide upper stopband," Asia-Pacific Microwave Conference, Yokohama, Japan, Nov. 29 - Dec. 02, 2022.

48. J. Lee and Juseop Lee, "Direct conversion from two-port S-parameters to coupled-line impedances," Asia-Pacific Microwave Conference, Yokohama, Japan, Nov. 29 - Dec. 02, 2022.

49. J. Lee, S.-W. Jeong, B. Lee, M. Lee, and Juseop Lee, "Dual-mode waveguide cavity filters and diplexer with fractional bandwidths around 0.2%," Int. Conference on Electronics, Information, and Communication (ICEIC), Singapore, Feb. 05- 08, 2023.

50. J. Lee, Juseop Lee, S. Nam, and S. Choi, "Synthesizing input-reflectionless filters with transmission zeros: first Cauer, then Foster," IEEE MTT-S Int. Microwave Filter Workshop, Cocoa Beach, FL, Feb. 21-23, 2023.

51. S. Lee, J. Lee, and Juseop Lee, "Rigorous approach to the coupling matrix synthesis problem based on geometric interpretation," IEEE MTT-S Int. Microwave Symp., Washington DC, June 16-21, 2024.

52. S. Jeong, J. Lee, and Juseop Lee, "Rigorous design approach for bandpass filter with specified wide spurious-free upper stopband," Australian Microwave Symposium (AMS), Gold Coast, Australia, Feb. 10-11, 2025.

53. H. Choi and Juseop Lee, "Fully formula-based design approach of asymmetric-response transmission-line filters without electromagnetic coupling tests," European Microwave Conference (EuMC), Utrecht, Netherlands, Sept. 23-25, 2025.

54. H. Choi, Y. Shin, D. Kim, S. Lee, and Juseop Lee, "Dual-mode dielectric waveguide resonator filter structure with a steep skirt response," German Microwave Conference (GeMiC), Karlsruhe, Germany, Mar. 9-11, 2026.

55. S. Oh, S. Choi, S. Nam, B. Lee, H. Lee, and Juseop Lee, "Post-loaded substrate-integrated waveguide filter for upper mid-band 6G applications," German Microwave Conference (GeMiC), Karlsruhe, Germany, Mar. 9-11, 2026.

56. S. Oh, S. Choi, S. Nam, B. Lee, H. Lee, and Juseop Lee, "Post-loaded substrate-integrated waveguide filter with liquid crystal-based frequency tuning operating at 6G band ," German Microwave Conference (GeMiC), Karlsruhe, Germany, Mar. 9-11, 2026.

57. S. P. Gowri, J. Lee, M. Sedaghat, N. B. Vangipurapu, J. Guo, Juseop Lee, and K. Chen, "Co-design of Doherty Power amplifier with a novel quadrature-combining filter," IEEE Wireless and Microwave Technology Conference (WAMICON) 2026, Clearwater, FL, Apr. 20-21, 2026.